C0042
Right Front Wheel Speed Sensor Circuit Low
Voltage in the right front wheel speed sensor circuit is below threshold, typically a short to ground.
Voltage in the right front wheel speed sensor circuit is below threshold, typically a short to ground.
Common causes
- high
Wiring shorted to ground
One of the most commonly reported causes for this code — check this first.
Typical part cost: $90-390
- medium
Sensor coil open
A plausible cause — test and verify before replacing parts.
Typical part cost: $90-390
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does C0042 mean?
C0042 means "Right Front Wheel Speed Sensor Circuit Low". It is a generic OBD-II code that points to a fault in the chassis.
What are the most common causes of C0042?
wiring shorted to ground; sensor coil open; connector pins corroded - high contact resistance — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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